What are the common classification of copper sleeve?

There are many kinds of copper cover, respectively, self-lubricating copper cover, there is no need to cover the copper with oil, and there is graphite copper cover that needs to be covered with oil.The production of commonly used materials are tin bronze, aluminum bronze, brass, lead bronze and so on.

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Copper sleeves, also known as copper bearings, are made of various copper alloys and are usually used to lubricate machine parts.

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Classification of copper – based alloys

Brass: Brass is an alloy of copper and zinc.Brass consisting of copper and zinc is called plain brass.Alloys made of more than two elements are called special brasses.Brass sleeve has strong wear resistance.


Special brass, also known as special brass, has the characteristics of high strength, high hardness, strong chemical resistance and so on.There are also more prominent processing mechanical properties.Seamless copper tubes made of brass are soft and durable.


Brass seamless tubes can be used in heat exchangers and condensers, low temperature pipelines, submarine pipelines.Manufacturing sheet, bar, bar, pipe, castings, etc.Copper in 62% ~ 68%, strong plastic, manufacturing pressure equipment.

Tin bronze: tin content in 3 ~ 14%, mainly used in the manufacture of elastic components and wear-resistant parts.The alloy has high mechanical properties, wear reduction and corrosion resistance, easy cutting, good brazing performance, small shrinkage, no magnetism.

Tin-bronze sheath has strong corrosion resistance in atmosphere, sea water, fresh water and steam, and is widely used in steam boilers and Marine parts.Also widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields.

Aluminum bronze: the content of aluminum is generally not more than 11.5%, and sometimes appropriate amount of iron, nickel, manganese and other elements are added to further improve the performance of aluminum bronze.Aluminum bronze can be strengthened by heat treatment.Its strength is higher than tin bronze.

Good wear resistance with high strength, used for high strength screw, nut, sleeve, sealing ring and wear parts, its most outstanding feature is its good wear resistance.


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